Hotel Blocks: Complete Guide to Rates & Contracts [2026]

Key takeaways

What is a hotel block?

A hotel block—also called a room block or group block—is a batch of rooms set aside for an event over a defined date range. Instead of each guest searching independently, you direct the group to one or more recommended hotels and a simple booking method, such as a dedicated link, group code, or call-in number.

A hotel block refers to a group of reserved rooms set aside for guests attending a specific event.

Hotel blocks are common for weddings, conferences, tournaments, reunions, and other gatherings with out-of-town guests. A negotiated rate may be useful, but the other major benefit is having a coordinated pool of rooms and a clear booking path. Keep in mind that a group rate is not automatically the cheapest public rate available every day, so it is smart to compare prices as the event approaches.

A room block also does not necessarily mean every guest will be placed on the same floor or in adjacent rooms. Room assignments depend on the hotel’s inventory and what becomes available at check-in.

Types of hotel blocks

Courtesy block

A courtesy block is often the lowest-risk option for the host. The hotel generally holds a limited number of rooms until a release or cut-off date, after which unreserved rooms return to general inventory. Some properties expressly offer courtesy blocks with no financial obligation; for example, Marriott currently advertises this arrangement at certain properties. However, the term is not standardized, so verify the written agreement rather than relying on the word “courtesy” alone.

Marriott’s Courtyard Cleveland University Circle wedding information is one current example of a courtesy block advertised with no financial obligation, subject to availability and property-specific conditions.

Contracted or guaranteed block

A contracted or guaranteed block reserves inventory more firmly and may be useful for large events, peak dates, destination events, or situations where room availability is especially important. Because the hotel is making a firmer inventory or revenue commitment, the agreement may include deposits, cancellation terms, minimum room or revenue commitments, and an attrition clause.

Courtesy vs. contracted hotel blocks

How attrition is actually calculated

Attrition is the shortfall between what your group committed to use or generate and what it actually uses or generates. An agreement may allow a certain amount of shrinkage before damages are owed. Industry guidance commonly discusses allowable attrition in percentage terms, but there is no single standard percentage that applies to every hotel or event.

Lighthouse’s hotel attrition guidance describes revenue-based, cumulative, and per-night approaches. Current hotel agreements also show why you must rely on the actual contract rather than a generic percentage.

• Per-night attrition — the required pickup or revenue is tested separately for each night. A strong Friday may not offset a weak Sunday.
• Cumulative attrition — the agreement measures total room nights across the event, allowing stronger nights to offset weaker nights if the contract permits it.
• Revenue-based attrition — the agreement requires a minimum amount of guest-room revenue instead of only counting rooms.

Example: Suppose a contract includes 100 room nights and allows 20% cumulative attrition. That would generally mean the group must achieve 80 room nights before the contract’s damages formula becomes relevant. If the group finishes with 72 room nights, the shortfall against that 80-room-night minimum is eight room nights. What the organizer actually owes for those eight nights depends on the contract’s damages, tax, mitigation, and resale provisions.

Some agreements give credit when unused rooms are resold, but the details matter. Hyatt’s current Group & Event Sales Agreement Terms and Conditions, for example, includes specific rules for which resold rooms qualify for credit toward attrition charges.

Sample attrition language to look for

Contracts vary, but a useful attrition clause should clearly state the minimum pickup or revenue requirement, the amount of allowable shrinkage, how the shortfall is measured, when it is measured, how damages are calculated, whether rooms booked outside the group code can receive credit, and whether qualifying resold rooms reduce the amount owed.

If a contract does not clearly explain those points, ask the hotel to clarify them in writing before signing. This is general planning information, not legal advice. For a high-value, destination, corporate, or otherwise complex contract, consider having an attorney review the agreement.

How many rooms should you reserve?

There is no single correct number. A better estimate starts with the people who are likely to stay overnight rather than your total event attendance.

• Start with your out-of-town count or anyone who is likely to stay near the venue.
• Group guests by room rather than by person. Couples and families may share.
• Estimate each night separately. Some guests arrive early, leave early, or stay an extra night.
• Separate rooms from room nights. One room used for three nights equals three room nights.
• Leave yourself a margin of safety if the agreement carries attrition liability.
• Start smaller when possible and ask how additional rooms will be priced if pickup is strong.

A simple room-block estimate

First count the households, couples, or individuals who have told you they expect to need lodging. Then map those rooms across each night.

For example, suppose 24 traveling parties need hotel rooms. Eighteen expect to stay Friday night and 12 expect to stay Saturday night. Your estimated peak demand is 18 rooms, while your total demand is 30 room nights. Those two numbers serve different purposes, so give the hotel both.

If you are unsure, ask the hotel to quote several block sizes and explain whether you can add rooms later without changing the original group’s financial commitment.

How to reserve a hotel block

1. Set your dates and priorities. Confirm the event schedule, peak nights, budget range, and must-have amenities such as parking, breakfast, accessibility, and shuttle options.
2. Estimate peak rooms and total room nights. Hotels need both the busiest night’s demand and the total nights you expect the group to use.
3. Shortlist nearby hotels. Aim for at least two options at different price points when possible.
4. Request a group proposal. Share the event type, estimated room nights, preferred room mix, arrival/departure pattern, and whether guests will pay individually or the organizer will use a master account.
5. Compare the total guest cost. Look beyond the headline room rate to taxes, mandatory fees, parking, breakfast, Wi-Fi, minimum-stay rules, and cancellation terms.
6. Choose the block type. Courtesy blocks may reduce the host’s financial risk; contracted blocks may make sense when stronger inventory protection is important.
7. Review the agreement. Confirm the group rate, cut-off date, attrition requirements, cancellation terms, deposits, payment method, resale credits, relocation terms, and any perks.
8. Sign the written agreement. Do not rely on verbal promises that are missing from the final document.
9. Test and publish the booking instructions. Add the link or code to your event site, invitations, and reminder emails. Test the link on both desktop and mobile before sending it to guests.

Negotiating rates and key contract terms

Room rate matters, but financial risk and the total guest cost matter just as much. When you negotiate, focus on price, deadlines, flexibility, mandatory fees, and what happens if actual demand differs from your forecast.

• Group rate and whether it also applies to pre-event and post-event nights
• Taxes and mandatory charges, including resort or destination fees if applicable
• Parking, breakfast, Wi-Fi, and shuttle costs
• Minimum-stay requirements or restrictions on specific nights
• Cut-off date, after which unreserved rooms may be released
• Attrition, including the required pickup or revenue, allowable shrinkage, measurement method, and damages formula
• Resale or mitigation credit for unused rooms the hotel later sells
• Deposits and payment, including who pays for rooms, taxes, and incidentals
• Cancellation and change policy, including notice requirements and liquidated damages
• Relocation or walk provisions if the hotel cannot accommodate a guest with a confirmed reservation
• Outside-block credit for guests who book directly with the hotel without using your group link or code
• Perks or concessions, such as upgrades, welcome-bag handling, breakfast, shuttle service, parking, Wi-Fi, or complimentary rooms

Cut-off, attrition, and cancellation are different

These terms are easy to mix up, but they answer different questions:

• Cut-off date: when the hotel may stop holding unreserved rooms for your group or stop guaranteeing the group rate.
• Attrition: whether your group met the contracted room-night or revenue commitment.
• Group cancellation: what the organizer owes if the event or hotel agreement is canceled.
• Guest cancellation: the rules that apply when an individual guest cancels a personal reservation.

Many wedding blocks use a cut-off around four weeks before arrival, but there is no universal rule. A current Anaheim Marriott wedding package uses a four-week release date, while another current Marriott group agreement uses a 14-day cut-off. Your signed agreement controls.

Association of Bridal Consultants guidance also recommends negotiating a room-block review so you can evaluate pickup before the final deadline.

Questions to ask before you sign

• Is this a courtesy block or a financially guaranteed block?
• Exactly how many rooms or dollars must the group produce?
• Is attrition measured per night, cumulatively, or by revenue?
• When can I reduce the block without liability?
• Will you credit rooms booked outside the group link?
• Will you credit rooms that the hotel resells?
• What taxes and mandatory fees will guests pay in addition to the quoted rate?
• Can the group rate be extended before or after the main event nights?
• What happens if the hotel cannot honor a confirmed guest reservation?
• What promises or concessions must appear in the signed agreement to be enforceable?

Managing reservations, rooming lists, and pickup

Many hotel blocks are set up so guests make and pay for their own reservations. Other events use a master account for some or all room charges. Either way, the organizer should track pickup and coordinate exceptions.

Track pickup

Ask your hotel contact for regular pickup reports and increase the frequency as the cut-off date approaches. Pickup shows how many rooms or room nights have actually been reserved and helps you decide whether to request more rooms, ask for an approved reduction, or remind guests to book.

Also ask what qualifies for credit toward your commitment. Guests sometimes reserve directly with the hotel without using the group code, but a contract may not automatically count those reservations. Get the outside-block audit process in writing before you depend on that credit.

Maintain a simple rooming list for VIPs

If you are covering rooms for speakers, family members, staff, or VIPs, keep a rooming list with names, dates, room types, and only the special needs the hotel actually requires. Share the final list by the deadline in your agreement.

Rooming lists and pickup reports can contain personal information. Limit access to people who need it, avoid sending unnecessary personal details, and follow the hotel’s secure process for transmitting guest information. Hilton’s current group-room terms, for example, address consent and lawful sharing of guest reservation data.

Communication with guests

Clear, repeated instructions make room blocks easier to use. Include the hotel name, booking link or code, covered dates, group rate, cut-off date, and any important parking, minimum-stay, or cancellation terms. Explain that after the deadline, the group rate and room availability may change.

It is also helpful to explain why booking through the official block matters. It can make pickup easier to track, may help the group satisfy contractual commitments, and keeps guests using the booking terms you negotiated.

You can adapt the attendee-friendly language in PCMA’s guidance on room blocks and housing communication:

How to talk to your attendees about your room block (PCMA)

Check the group rate against public prices

A group rate is negotiated, but it is not guaranteed to be lower than every public promotion available later. Periodically compare the booking-link price with the hotel’s own direct public rate for the same room type, dates, cancellation terms, and included benefits. If the public offer is clearly better, ask your hotel contact whether the group rate can be adjusted.

Handling changes and cancellations

Guest counts change. To stay in control, set expectations early, monitor the block, and keep your hotel contact informed.

• Request reductions before the applicable deadline if pickup is lower than expected, but confirm in writing that the reduction is allowed without additional liability.
• Ask for flexibility on the cut-off date or on releasing part of the block when demand changes.
• Clarify guest cancellation rules so travelers know when an individual reservation can be canceled without a charge.
• Review the organizer’s cancellation terms separately because canceling the overall group contract can trigger a different damages formula.
• Ask for resale credit where appropriate so qualifying rooms the hotel successfully resells can reduce attrition exposure if the agreement allows it.
• Plan for sellouts by naming a specific backup hotel, ideally within a similar walk or drive time from the venue.
• Review relocation terms so you know what happens if the hotel cannot accommodate a guest who already has a confirmed reservation.

Current Hyatt group terms are one example of a contract that addresses both resale credits and relocation of a guest with a confirmed reservation. The exact protections in your agreement may be different.

Post-event follow-up

After the event, ask the hotel for a final pickup summary and an itemized explanation of any charges connected to the group agreement. If attrition or other damages appear, compare the invoice with the contract’s calculation method and any applicable resale or outside-block credits.

Then gather quick feedback from guests about check-in, noise, room quality, accessibility, and transportation. A short thank-you note to the hotel contact can also help build a smoother relationship for future events.

Frequently Asked Questions